Synthesis of Chiral Tetrahydrofurans and Pyrrolidines by Visible-Light-Mediated Deoxygenation
作者:Daniel Rackl、Viktor Kais、Eugen Lutsker、and Oliver Reiser
DOI:10.1002/ejoc.201700014
日期:2017.4.18
The synthesis of chiral tetrahydrofurans and pyrrolidines starting from 1,2‐diols or β‐amino alcohols, respectively, by visible‐light‐mediated deoxygenation is described. Easily accessible monoallylated/propargylated substrates were activated either as inexpensive ethyl oxalates or as recyclable 3,5‐bis(trifluoromethyl)benzoates to generate alkyl radicals suitable for 5‐exo‐trig/5‐exo‐dig cyclizations